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研究了白水中的微胶粘物和树脂凝聚成较大颗粒和沉淀物的行为,并且测定了颗粒尺寸。如果微胶粘物浓度足够高,它们就会在过程水中循环。稳定的胶体物质的粒径取决于微胶粘物粒子间的相互吸引力和剪切作用导致的干扰之间的平衡。有效测定微小有机物累积(EMMA)潜能(分级测定胶体物质的粒径)能够引导我们探索导致沉淀的粒径范围。树脂和微胶粘物会产生相互干扰,从而降低其稳定性,这就能解释为什么混合机械浆和二次纤维纸浆会造成罕见高发的树脂沉积问题。
The behavior of microadhesion and resin coalescence in white water into larger particles and precipitates was investigated, and the particle size was determined. If the micro-adhesive concentration is high enough, they will circulate in the process water. The particle size of a stable colloidal material depends on the balance between the mutual attractive forces of the micropadhes and the interference caused by the shearing action. Efficient determination of EMMA potential (grading the colloidal particle size) led us to explore the range of particle sizes that lead to precipitation. Resin and microadhesion interfere with each other, reducing their stability, which explains why mixed mechanical and secondary fiber pulps can cause rare high resin deposition problems.